Why Katy Perry Wants Jelly Roll to Replace Her on 'American Idol': 'He Could Sell Me Anything'
Katy Perry knows who would be a "firework" as her replacement on American Idol . In an interview with E! News after the live show on Monday, April 15, the "Teenage Dream" musician, 39, opened up about who she would want to replace her as a judge after she leaves this year .